fs/nilfs2/cpfile.c

3  * cpfile.c - NILFS checkpoint file.
147  * @start_cno: start checkpoint number (inclusive)
148  * @end_cno: end checkpoint number (inclusive)
149  * @cnop: place to store the next checkpoint number
190  * nilfs_cpfile_get_checkpoint - get a checkpoint
191  * @cpfile: inode of checkpoint file
192  * @cno: checkpoint number
194  * @cpp: pointer to a checkpoint
197  * Description: nilfs_cpfile_get_checkpoint() acquires the checkpoint
198  * specified by @cno. A new checkpoint will be created if @cno is the current
199  * checkpoint number and @create is nonzero.
201  * Return Value: On success, 0 is returned, and the checkpoint and the
202  * buffer head of the buffer on which the checkpoint is located are stored in
210  * %-ENOENT - No such checkpoint.
212  * %-EINVAL - invalid checkpoint.
247 		/* a newly-created checkpoint */  in nilfs_cpfile_get_checkpoint()
276  * nilfs_cpfile_put_checkpoint - put a checkpoint
277  * @cpfile: inode of checkpoint file
278  * @cno: checkpoint number
281  * Description: nilfs_cpfile_put_checkpoint() releases the checkpoint
294  * @cpfile: inode of checkpoint file
295  * @start: start checkpoint number
296  * @end: end checkpoint numer
380 						  "error %d deleting checkpoint block",  in nilfs_cpfile_delete_checkpoints()
437 		return -ENOENT; /* checkpoint number 0 is invalid */  in nilfs_cpfile_do_get_cpinfo()
629 		return -ENOENT; /* checkpoint number 0 is invalid */  in nilfs_cpfile_set_snapshot()
747 		return -ENOENT; /* checkpoint number 0 is invalid */  in nilfs_cpfile_clear_snapshot()
841  * @cpfile: inode of checkpoint file
842  * @cno: checkpoint number
846  * Return Value: On success, 1 is returned if the checkpoint specified by
854  * %-ENOENT - No such checkpoint.
889  * nilfs_cpfile_change_cpmode - change checkpoint mode
890  * @cpfile: inode of checkpoint file
891  * @cno: checkpoint number
892  * @mode: mode of checkpoint
894  * Description: nilfs_change_cpmode() changes the mode of the checkpoint
904  * %-ENOENT - No such checkpoint.
931  * nilfs_cpfile_get_stat - get checkpoint statistics
932  * @cpfile: inode of checkpoint file
933  * @cpstat: pointer to a structure of checkpoint statistics
973  * @cpsize: size of a checkpoint entry
984 		nilfs_err(sb, "too large checkpoint size: %zu bytes", cpsize);  in nilfs_cpfile_read()
987 		nilfs_err(sb, "too small checkpoint size: %zu bytes", cpsize);  in nilfs_cpfile_read()